| 单词 | knock up |
| 释义 | knock up knock up — phrasal verb with knock /nɒk/ aep /nɑːk/ verb ► F0 Players knock up before beginning a game of tennis or similar sport by hitting the ball to each other: » The players have a couple of minutes to knock up before the match starts.Thesaurus+: ↑Tennis and racket sports |
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